#在字典中存储字典
users = {
    'aeinstein': {
        'first': 'albert',
        'last': 'einstein',
        'location': 'princeton',
    },

    'mcurie': {
        'first': 'marie',
        'last': 'curie',
        'location': 'paris',
    },

}

for username,user_info in users.items():
    print(f'\nUsername:{username}')
    full_name = f"{user_info['first']} {user_info['last']}"
    print(f'\tFull_name:{full_name.title()}')
    location = user_info['location']
    print(f'\tLocation:{location.title()}')
